Introduction
A. Statement of Need
There
are two primary reasons why the (company name) will implement a Confined Space
Entry Program. (company
name) must comply with the Cal/OSHA
Confined Spaces Standard found in GISO 5156 and Federal OSHA 29CFR1910.146 Additionally, this program
will assist the (company name) in achieving the overall goal of a safer work place.
B. Anticipated Benefits
Several benefits are anticipated
with the implementation of the Confined Space Entry Program.
1.
Prevention of illnesses and injuries related to entry
and/or work in permit-required confined spaces.
2.
Overall improvement of the company’s Safety Program.
3.
Improvement of employer-employee relations by
establishing regular lines of communication.
4.
Avoidance of citations, violations, and related
problems from the Federal and state regulations
C. Program Administrator:
C. Program Administrator:
The Confined Space Entry Program Administrator is the
company’s Safety Organization.
D. Location and contact person for the written program:
D. Location and contact person for the written program:
A copy of this written confined space entry program is
available, upon request, to employees, their designated representatives,
directors or designees of the Federal Occupational Health and Safety
Administration (OSHA). A copy of this
written confined space entry program will be kept at:
(Company name)
E. Notice
E. Notice
Employees and contractors of (company
name) shall not enter a confined space until the following requirements
are met:
1.
Hazards are identified and evaluated; and
2.
Workers entering the space are trained on confined
space hazards and entry procedures; and
3.
Workers entering the space are identified and made
aware of possible hazards that may be encountered on that particular job; and
4.
Appropriate danger signs have been posted; and
5.
Proper personal protective equipment has been selected
and issued to affected employees.
If a confined space is not entered because one of the
conditions mentioned above has not been met, the confined space will be
restricted to employees and others by erecting barriers, installing locks,
and/or posting warning signs until requirements have been met.
I. Purpose
The purpose of this program is to ensure the protection of
all employees of the (company name) from the
hazards associated with confined space entry. This document contains
requirements for practices and procedures to protect employees from those
hazards of entry into and work within permit required confined spaces.
It shall be the policy of the (company
name) to reduce the need for confined space entry. It shall also be the
policy of the (company name) to eliminate whenever possible, all confined
space hazards in order to reclassify permit-required confined spaces to
non-permit required confined spaces. When confined space entry is necessary,
all provisions of this document are to be followed
II. Authority
The (company name’s) Confined Space Entry Program is required by
the Federal and state regulations.
III. Summary
(company name)
has the responsibility to establish a written, comprehensive program
which includes provisions for working in confined spaces. These provisions entail preventing
unauthorized entries, identifying and evaluating hazards, establishing
procedures for safe permit space entry, issuing and maintaining proper
equipment, using outside attendants, establishing rescue and emergency
procedures, identifying duties and job classifications of employees entering
and/or working in confined spaces, establishing a system for issuing entry
permits, developing post-entry
procedures, and conducting post-illness/injury reviews.
The written plan will be
reviewed every year in January for accuracy and completeness.
The written plan and its elements will be updated in the
following situations:
1. When
there is reason to believe that provisions of the program may not protect
employees.
2. When
new processes and/or technologies are introduced.
3. When
job duties mentioned in the program are changed.
4. When
locations mentioned in the program are changed.
5. When
requirements for written confined space entry programs have changed in
accordance with applicable standards, codes and regulations.
6. When
any other elements are changed.
IV. Definition of a Confined Space
A confined space
means a space that: 1) is large
enough and so configured that an employee can bodily enter and perform assigned
work; 2) has limited or restricted
means for entry or exit; and 3) is
not designed for continuous human occupancy.
Examples of confined spaces include but are not limited to storage
tanks, process vessels, bins, silos, boilers, ventilation or exhaust ducts,
sewers, pipe chassis, underground utility vaults, tunnels, and pipelines.
A permit-required
confined space means a confined space that either 1) contains or has the potential to contain a hazardous atmosphere,
2) contains a material that has the
potential for engulfing an entrant, 3)
has an internal configuration such that an entrant could be trapped or
asphyxiated by inwardly converging walls or by a floor which slopes downward
and tapers to a smaller cross-section, or 4)
contains any other serious safety or health hazard.
A.
Responsibilities
The
Safety Organization shall be responsible for the development, documentation,
and administration of the (company name’s ) Confined Space Entry Program. In fulfilling these responsibilities, the
Safety Organization shall carry out the following tasks:
1)
Develop the Written Confined Space Entry Program and
revise the program as necessary.
2)
Maintain records of employee training.
3)
Provide guidance for the proper selection and use of
appropriate air monitoring equipment, respiratory protection, and personal
protective equipment to meet the requirements of this program.
4)
Periodically audit work operations and documentation
using canceled permits to evaluate the overall effectiveness of the Confined
Space Entry Program and ensure that employees participating in entry operations
are protected from permit space hazards.
5)
Assist each Manager/Supervisor in identifying confined
spaces encountered by his/her employees.
6)
Provide guidance for the proper selection and use of
appropriate safety and rescue equipment to meet the requirements of the
Confined Space Entry Program.
2. Supervisors
Supervisors
shall identify and report all job areas and locations that are or may be
confined spaces. A list of confined spaces that are identified shall be
submitted to the Safety Organization. In
addition to this, designated supervisors shall carry out the following
tasks:
1) Classify
confined spaces as "permit required," “Alternate Procedure” or
"non-permit required.”
2) Identify
personnel who will enter confined spaces.
3) Identify
the personnel under their supervision required to wear respirators.
4) Advise
personnel on routine measurement of respiratory hazards in confined spaces.
5) Provide
detailed instruction and training on confined space hazards and entry
procedures to those who may enter confined spaces.
6) Provide
instruction to personnel on the proper use of equipment required for confined
space entry.
7) Maintain
equipment that is used to enter confined spaces.
8) Conduct
work site inspections to review unit compliance with confined space entry
procedures.
9) Maintain
records of equipment maintenance and employee training.
10) Inform
employees who may enter the permit confined space by posting danger signs or by
training.
11) Issuance
and cancellation of entry permits.
12) Establishment
of a lockout program for their department.
13) Identify
and evaluate the hazards of permit spaces before employees enter them.
14) Conduct
a pre-entry briefing to inform entrants of possible hazards that may be
encountered.
15) Identify
the people who will enter the confined spaces.
16) Take
the necessary measures to prevent entrance into prohibited permit spaces.
3.
Employees who may enter confined spaces
Employees
who may enter confined spaces shall comply with the confined space entry
procedures contained herein and with those procedures stipulated by their
supervisor. To comply, employees shall
carry out the following tasks:
1)
Store, clean, maintain and guard against damage,
equipment used for confined space entry.
2)
Report any deficiencies or malfunction of equipment to
a supervisor.
3)
Understand emergency procedures in case of an accident
in a confined space.
4)
Under no circumstance enter a confined space that is
suspect of having a non-respirable atmosphere, even to rescue a fellow
employee.
B. Permit-Required Confined Space Program
Departments will identify and classify every confined space
as either a Permit-Required Confined Space or, when the confined space does not
present a real potential hazard, a Non-Permit Confined Space. When Permit-Required Confined Spaces are
identified, department heads and supervisors will also be responsible for the
following:
a. Preventing
Unauthorized Entry
b. Identifying
Permit Space Hazards
c.
Developing Safe Entry Practices
d. Maintaining
and Using Equipment Properly
e.
Testing for Acceptable Entry Conditions
f.
Providing Permit Space Attendants
g. Providing
Emergency Retrieval Systems
1. Program
Elements for Permit-Required Confined Spaces
1)
Preventing
Unauthorized Entry
In order to prevent unauthorized
entry into permit-required confined spaces, Departments must utilize at least
two of the following mechanisms:
·
Providing information to visitors
·
Posting warning signs
·
Erecting barriers
·
Installing locks or covers at entry points
Each Department will document the
implementation of these mechanisms and ensure that they remain in place.
2) Identifying Permit Space Hazards
Each Department will
identify and evaluate the hazards of permit spaces before employees enter them.
The following hazards shall be
identified prior to entry into a confined space:
·
Atmospheric hazards
·
Asphyxiating atmospheres
·
Flammable atmospheres
·
Toxic atmospheres
·
Burn hazards
·
Heat stress hazards
·
Mechanical hazards
·
Engulfment hazards
·
Physical hazards (falls, debris, slipping
hazards)
·
Electrocution
·
Danger of unexpected movement of machinery
·
Noise hazards
3) Developing Safe Entry Practices
Departments will
implement procedures and practices necessary for safe permit space entry
operations. Theses include, but are not limited to:
·
Acceptable entry conditions
·
Isolating the permit space
·
Purging, inerting, flushing or ventilating the
permit space as necessary to eliminate or control atmospheric hazards.
·
Pre-entry Briefing. The lead worker will conduct
a meeting of all employees who will enter the confined space. Employees will be
informed of the hazards and safety conditions of the particular job
4)
Controlling
Hazards
Hazards shall be controlled by the following mechanisms:
·
Lockout of energy sources
·
Cleaning and purging(See Appendix c, Ventilation
of Confined Spaces)
·
Personal protective equipment (see the City of Spokane ’s Written
Respiratory Protection Program)
5)
Entering Confined Spaces along Roadways
The following precautions shall be
followed when entering a confined space located along a roadway, parking lot,
or any areas where traffic flow may cause a potential hazard:
·
Approach the area cautiously and activate
flashers upon approach to the confined area to be entered.
·
Park any vehicles in such a way that traffic
will flow in the most unobstructed manner, and where possible, the vehicle
should provide protection for the entry crew.
·
Park the vehicle in such a manner that exhaust
fumes are not drawn down into the manhole. If this is not possible, extend the
exhaust stack above the vehicle.
·
Before uncovering a manhole, place traffic
safety cones around the manhole and vehicle, visible to traffic in all
directions. Place cones to protect the crew and to channel traffic flow. The
cones should be placed at sufficient distances and intervals to adequately warn
oncoming traffic.
·
In areas of high traffic volume or other sites
warranting additional highly visible safety equipment, use illuminating traffic
arrows, barricades, and "Men Working" signs.
·
When placement of the vehicle creates a
situation of having only one open lane of traffic in a congested area, use a
flag person to direct traffic flow. When a flag person is necessary, an
additional crew member is required to attend the employee in the manhole. Wear
traffic safety vests or equivalent at all times when working on the street or
easement surface in the field.
·
In the case of opening or obstructions in the
street or sidewalk being worked on or left unattended, effectively display
danger signals such as warning signs, cones, and flags. Under these same
conditions at night, prominently display warning lights. Enclose excavations
and openings with suitable barricades.
2.
Equipment use and maintenance
Equipment,
including testing, ventilating, lighting, monitoring, communication and
personal protective equipment, necessary for the safe entry into a Permit Space
shall be provided, maintained and properly used by each Department. See
Appendix d, Basic Confined Space Entry and Rescue Equipment.
3.
Testing for acceptable entry conditions
Permit space
evaluation will include all testing conducted before an entry as well as all
testing and monitoring activities to ensure that acceptable entry conditions
are maintained throughout the entry. Atmospheric testing should be conducted in
accordance with Appendix b of this program.
4.
Providing permit space attendants
Each Department
will provide at least one attendant outside a permit space to be entered for
the duration of the entry operations. See Appendix e, “Duties of the Attendant”
for specific responsibilities.
5.
Training and Duties of Entry Personnel
There are three
specific members of a confined space entry team:
1) Authorized
Entrants
2) Attendants
3) Entry
Supervisor or “Lead Worker”
The department
shall provide training so that all employees whose work is regulated by this
section acquire the understanding, knowledge, and skills necessary for the safe
performance of the duties assigned.
Training shall be
provided to each affected employee:
·
Before the employee is first assigned duties.
·
Before there is a change in assigned duties.
·
Whenever there is a change in permit space
operations that presents a hazard about which an employee has not previously
been trained.
·
Whenever the department has reason to believe either
that there are deviations from the permit space entry procedures or that there
are inadequacies in the employee's knowledge or use of these procedures.
The training shall establish employee proficiency in the
duties outlined in Appendix e and shall establish new or revised procedures, as necessary, for
compliance with applilcable standards, codes and regulations.
The department shall certify that the training required by
the previously mentioned paragraphs has been accomplished.
The certification shall contain each employee's name, the signatures or
initials of the trainers, and the dates
of training. The certification shall be available for inspection by employees
and their authorized representatives.
Only trained attendants, authorized entrants, and personnel
authorizing or in charge of entry shall work in and around a Permit Space.
6.
Rescue and Emergency Services – “911” is not a
primary emergency service for confined space rescue
Where ever
possible, the use of non-entry rescue systems or methods shall be used. Where non-entry rescue is not possible, departments
will coordinate rescue and emergency services.
These service prividers will be made aware of the hazards they may
confront when called on to perform rescues.
They shall be responsible to equip, train, and conduct it appropriately.
Designated departments will provide the service
providers with access to all permit spaces from which rescue may be necessary
so that they can develop appropriate rescue plans and practice rescue operations.
To facilitate
non-entry rescue, retrieval systems or methods shall be used whenever an
authorized entrant enters a permit space, unless the retrieval equipment would
increase the overall risk of entry or would not contribute to the rescue of the
entrant.
Non-Entry Rescue
Retrieval Systems shall meet the following requirements:
1) Each
authorized entrant shall use a chest or full body harness, with a retrieval
line attached at the center of the entrant's back near shoulder level, or above
the entrant's head. Wristlets may be used in lieu of the chest or full body
harness if the employer can demonstrate that the use of a chest or full body
harness is infeasible or creates a greater hazard and that the use of wristlets
is the safest and most effective alternative.
2) The
other end of the retrieval line shall be attached to a mechanical device or
fixed point outside the permit space in such a manner that rescue can begin as
soon as the rescuer becomes aware that rescue is necessary. A mechanical device
shall be available to retrieve personnel from vertical type permit spaces more
than 5 feet deep.
3) If
an injured entrant is exposed to a substance for which a Material Safety Data
Sheet (MSDS) or other similar written information is required to be kept at the
worksite, that MSDS or written information shall be made available to the
medical facility treating the exposed entrant.
7.
Written Permit System
A permit system shall be utilized for entry into Permit
Spaces
Each canceled entry
permit shall be retained for at least 1 year to facilitate the review of the
permit-required confined space program. Any problems encountered during an entry
operation shall be noted on the pertinent permit so that appropriate revisions
to the permit space program can be made.
8.
Coordinating entry operations
All outside
contractors performing work in confined space entry permit areas shall be
informed of any fire, explosion, health or other safety hazards of that
confined space. This information shall be based on current or past history of
the confined space and the nature of the contractor's work procedure in making
such disclosure.
Each Department
shall inform contractors of the (company name’s)
safety rules and emergency plans which
may be applicable to the contractor's employees. Contractors and their employees must not be
allowed to enter a confined space until the provisions of this program have
been satisfied. When both company and contractor personnel are working in or
near permit spaces, their entry operations must be coordinated to avoid
endangering any personnel.
At the conclusion
of the entry operations, the contractor must be debriefed regarding the permit
space program that was followed and concerning any hazards confronted or
created in permit spaces during entry operations.
It is the
responsibility of each contractor who is retained to perform permit space entry
operations to obtain any available information regarding permit space hazards
and entry operations. They must also
coordinate entry operations with the (company name) when
both will be working in or near permit spaces. The company must be informed of the permit space
program that the contractor will follow and of any hazards confronted or
created in permit spaces, either through a debriefing or during the entry
operations.
9.
Concluding entry
The lead worker
will determine when the entry operations have been completed. The permit space
will be closed and the permit canceled. The lead worker will write "Permit
Canceled" with the date, time, and signature at the bottom of the Confined
Space Permit. Entry into the permit
space will only be allowed after following all aspects of this program.
10.
Program review and revision
Each Department
will review entry operations and revise the procedures to correct any
deficiencies before subsequent entries are authorized. Any revisions will be reported to the Safety Organization
in order to revise the written program.
11.
Annual compliance review
The Safety Organization
will review the program annually in light of actual entry, work, and exit
experience to determine how the program can be improved.
C. Alternative
Entry
Employees who enter a confined space need not comply with
the procedures set forth in the program provided that:
a.
It can be demonstrated that the only hazard posed
by the permit space is an actual or potential hazardous atmosphere.
b.
It can be demonstrated that continuous forced air
ventilation alone is sufficient to maintain that permit space safe for entry.
c.
Monitoring and inspection data are developed that
support the previous conclusions.
d.
If an initial entry of the permit space is
necessary to obtain the data required, the entry is performed according to the
procedures set forth in this document concerning the entry of a permit required
confined space.
e.
The determinations and supporting data required are
documented and made available to each employee who enters the space.
D. Reclassification to a
Non-Permit Confined Space
If a permit space poses no actual or potential atmospheric
hazards and if all hazards within the space are eliminated without entry into
the space, the permit space may be reclassified as a non-permit confined space
for as long as the non-atmospheric hazards remain eliminated.
If it is necessary to enter the permit space to eliminate
hazards, such entry shall be performed. If testing and inspection during that entry
demonstrate that the hazards within the permit space have been eliminated, the
permit space may be reclassified as a non-permit confined space for as long as
the hazards remain eliminated.
Note: Control of
atmospheric hazards through forced air ventilation does not constitute
elimination of the hazards.
The department shall document the basis for determining that
all hazards in a permit space have been eliminated, through a certification
that contains the date, the location of the space, and the signature of the
person making the determination. The certification shall be made available to
each employee entering the space.
If hazards arise within a permit space that has been
declassified to a non-permit confined space under this section, each employee
in the space shall exit the space. The Department shall then reevaluate the
space and determine whether it must be reclassified as a permit space, in
accordance with other applicable provisions.
Appendix
a.- Definitions
Acceptable entry
conditions: means the conditions that must exist in a permit space to allow
entry and to ensure that employees involved with a permit-required confined
space entry can safely enter into and work within the space.
Alternate Entry
Procedures: means procedures that may be used when the only hazard of a
confined space, based upon monitoring and inspection data, is an actual or
potential hazardous atmosphere in which continuous forced air ventilation alone
is all that is needed to maintain the permit required confined space for safe
entry.
Attendant: means
an individual stationed outside one or more permit spaces who monitors the
authorized entrants and who performs all attendant's duties assigned in the
employer's permit space program.
Authorized Entrant:
means an employee who is authorized by the employer to enter a permit required
confined space.
Blanking or Blinding:
means the absolute closure of a pipe, line or duct, by the fastening of a solid
plate (such as a spectacle blind or a skillet blind) that completely covers the
bore and that is capable of withstanding the maximum pressure of the pipe,
line, or duct with no leakage beyond the plate.
Confined Space:
means a space that the space:
1) Is
large enough and so configured that an employee can bodily enter and perform
assigned work; and
2) Has
limited or restricted means for entry or exit (for example, tanks vessels,
silos, storage bins, hoppers, vaults, and pits are spaces that may have limited
means of entry.); and
3) Is
not designed for continuous employee occupancy.
Double Block and
Bleed: means the closure of a line, duct or pipe by closing and locking or
tagging two in-line valves and by opening and locking or tagging a drain or
vent valve in the line between the two closed valves.
Emergency: means
any occurrence (including any failure of hazard control or monitoring
equipment) or event(s) internal or external to the confined space that could
endanger entrants.
Engulfment: means
the surrounding and effective capture of a person by a liquid or finely divided
(flowable) solid substance that can be aspirated to cause death by filling or
plugging the respiratory system or that can exert enough force on the body to
cause death by strangulation, constriction, or crushing.
Entry: means the
action by which a person passes through an opening into a permit required
confined space. Entry includes ensuing work activities in that space and is
considered to have occurred as soon as any part of the entrant's body breaks
the plane of an opening into the space.
Entry permit: means the written or printed document that is
provided by the employer to allow and control entry into a permit space and
contains the information specified in paragraph (f) of this section.
Entry permit system:
means the employer's written procedures for preparing and issuing permits for
entry and returning the permit space to service following termination of entry
and designates by name or title the individuals who may authorize entry.
Entry supervisor:
See "Lead Worker". The term "Lead Worker" is utilized by
The City of Spokane wherever 29 CFR 1910.146 refers to the "entry
supervisor".
Hazardous atmosphere:
means an atmosphere that may expose employees to the risk of death,
incapacitation, and impairment of ability to self-rescue (that is, escape
unaided from a permit space), injury, or acute illness from one or more of the
following causes:
1) Flammable
gas, vapor, or mist in excess of 10 percent of its lower flammable limit (LFL);
2) Airborne
combustible dust at a concentration that meets or exceeds its LFL;
Note: This concentration may be approximated as a condition in
which the dust obscures vision at a distance of 5 feet (1.52 m) or less.
3) Atmospheric
oxygen concentration below 19.5 percent or above 23.5 percent;
4) Atmospheric
concentration of any substance which may exceed a permissible exposure
limit.
Note: An airborne concentration of a substance that isn’t capable
of causing death, incapacitation, impairment of ability to self-rescue, injury,
or acute illness due to it health effects isn’t covered by this definition.
5) Any
other atmospheric condition that is immediately dangerous to life or
health.
Note: For air contaminants for which OSHA has not determined a dose
or permissible exposure limit, other sources of information, such as Material
Safety Data Sheets that comply with the Hazard Communication Standard,
1910.1200 , published information, and internal documents can provide guidance
in establishing acceptable atmospheric conditions.
Hot work permit:
means the employer's written authorization to perform operations (for example,
riveting, welding, cutting, burning, and heating) capable of providing a source
of ignition.
Immediately dangerous
to life or health (IDLH): means any condition which poses an immediate or
delayed threat to life or that would cause irreversible adverse health effects
or that would interfere with an individual's ability to escape unaided from a
permit space.
Note: Some materials - hydrogen fluoride gas and cadmium vapor, for example - may produce immediate transient effects that, even if severe, may pass without medical attention, but are followed by sudden, possibly fatal collapse 12 - 72 hours after exposure. The victim "feels normal" from recovery from transient effects until collapse. Such materials in hazardous quantities are considered to be "immediately" dangerous to life or health.
Note: Some materials - hydrogen fluoride gas and cadmium vapor, for example - may produce immediate transient effects that, even if severe, may pass without medical attention, but are followed by sudden, possibly fatal collapse 12 - 72 hours after exposure. The victim "feels normal" from recovery from transient effects until collapse. Such materials in hazardous quantities are considered to be "immediately" dangerous to life or health.
Inerting: means
the displacement of the atmosphere in a permit space by a noncombustible gas
(such as nitrogen) to such an extent that the resulting atmosphere is
noncombustible.
Note: This procedure produces an IDLH oxygen-deficient atmosphere.
Note: This procedure produces an IDLH oxygen-deficient atmosphere.
Isolation: means
the process by which a permit space is removed from service and completely protected
against the release of energy and material into the space by such means as:
blanking or blinding; misaligning or removing sections of lines, pipes, or
ducts; a double block and bleed system; lockout or tagout of all sources of
energy; or blocking or disconnecting all mechanical linkages.
Lead Worker (Entry Supervisor): means the person (such as the
employer, foreman, or crew chief) responsible for determining if acceptable
entry conditions are present at a permit space where entry is planned, for authorizing
entry and overseeing entry operations, and for terminating entry as required by
this section. The term "Lead Worker" is utilized by the City of Spokane wherever 29 CFR
1910.146 refers to the "entry supervisor."
Note: A lead worker also may serve as an attendant or as an authorized entrant, as long as that person is trained and equipped as required by this section for each role he or she fills. Also, the duties of lead worker may be passed from one individual to another during the course of an entry operation.
Line breaking:
means the intentional opening of a pipe, line, or duct that is or has been
carrying flammable, corrosive or toxic material, an inert gas, or any fluid at
a volume, pressure, or temperature capable of causing injury.
Non-permit confined
space: means a confined space that does not contain or, with respect to
atmospheric hazards, have the potential to contain any hazard capable of
causing death or serious physical harm.
Oxygen deficient atmosphere: means an atmosphere containing less
than 19.5 percent oxygen by volume.
Oxygen enriched
atmosphere: means an atmosphere containing more that 23.5 percent oxygen by
volume.
Permit required
confined space: (permit space) means a confined space that has one or more
of the following characteristics:
1) Contains
or has a potential to contain a hazardous atmosphere;
2) Contains
a material that has the potential for engulfment of an entrant;
3) Has
an internal configuration such that an entrant could be trapped or asphyxiated
by inwardly converging walls, or a floor which slopes downward and tapers to a
smaller cross-section; or,
4) Contains
any other recognized serious safety or health hazard.
Permit required
confined space program: means the employer's overall program for
controlling, and, where appropriate, for protecting employees from, permit
space hazards and for regulating employee entry into permit spaces.
Permit system:
means the employer's written procedure for preparing and issuing permits for
entry and for returning the permit space to service following termination of
entry.
Prohibited condition:
means any condition in a permit space that is not allowed by the permit during
the period when entry is authorized.
Rescue service: means the personnel designated to rescue employees
from permit spaces.
Retrieval system:
means the equipment (including a retrieval line, chest or full-body harness,
wristlets, if appropriate, and a lifting device or anchor) used for non-entry
rescue of persons from permit spaces.
Testing: means
the process by which the hazards that may confront entrants of a permit space
are identified and evaluated. Testing includes specifying the tests that are to
be performed in the permit space. Testing enable employers both to devise and
implement adequate control measures for the protection of authorized entrants
and to determine if acceptable entry conditions are present immediately prior
to, and during, entry.
Appendix
b.- Atmospheric Testing and Monitoring
1. Procedures
For Atmospheric Testing And Monitoring
Atmospheric testing is necessary for two purposes:
evaluation of the hazards of the permit space and verification that acceptable
entry conditions for entry into that space exist.
1) Evaluation Testing
The atmosphere of a
confined space should be analyzed using equipment of sufficient sensitivity and
specificity to identify and evaluate any hazardous atmospheres that may exist
or arise, so that appropriate entry procedures can be developed and acceptable
entry conditions stipulated for that space.
A minimum of three tests should be performed to identify atmospheric
hazards in confined spaces. These tests must be performed in the following
sequence:
·
Oxygen Content
·
Flammability
·
Toxicity
2) Verification Testing
The atmosphere of a
permit space which may contain a hazardous atmosphere should be tested for
residues of all contaminants identified by evaluation testing using permit
specified equipment to determine that residual concentrations at the time of
testing and entry are within the range of acceptable entry conditions.
3) Duration of Testing
Measurement of
values for each atmospheric parameter should be made for at least the minimum
response time of the test instrument specified by the manufacturer.
4) Testing Stratified Atmospheres
When monitoring for
entries involving a descent into atmospheres that may be stratified, the
atmospheric envelope should be tested a distance of approximately 4 feet in the
direction of travel and to each side. If a sampling probe is used, the
entrant's rate of progress should be slowed to accommodate the sampling speed
and detector response.
5) Equipment Calibration
To ensure that the
atmospheric testing equipment is functioning properly, any direct reading test
device should not be used without performing the following three operations:
·
Inspection
·
Calibration
Function TestAll three operations should
be performed according to specific manufacturer’s instructions.
2. AIR MONITORING GUIDE
1) Calibrate Instrument
2) Inspect Instrument
Check physical condition of instrument (case,
meter, attachments, hoses for cracks)
·
Review instructions to insure you know how to
use the device and interpret results.
3) Perform Function Test
·
Oxygen sensor: breathe into sampling device to
reduce the oxygen level below 19.5%. The oxygen alarm should sound.
·
Combustible gas sensor: remove cap of solvent
magic marker or open a cigarette lighter without a flame near the sampling
device until it reaches a 10% reading. The gas sensor should sound.
·
Always perform a function test in the field before
use.
·
Never perform a function test in the suspected
atmosphere.
4) Pre-Test Space
·
Zero instrument in known fresh air.
·
Test entire space, top to bottom, every four
feet and in the direction of travel.
·
Order of tests:
à
Oxygen
à
Flammability
à
Toxicity
5) Monitor the Space
·
If continuous monitoring is required, position
the instrument near the workers breathing zone.
Appendix c.- Ventilation of Confined Spaces
Ventilation is one of the most effective means of
controlling hazardous atmospheres in confined spaces. In this procedure, clean
air replaces contaminated air by natural or forced (mechanical) ventilation.
1. Factors
in Ventilating Confined Spaces
When ventilating a confined space, the following factors
must by taken into consideration:
1)
Volume of air:
This determines the capacity of the
blower or ejector.
2)
Type of
atmosphere:
This
will determine the type of blower or ejector used and the length of time needed
to ventilate until it is safe for people to enter the space.
3)
Access to space:
This determines how to get the
ventilating air into and out of the space.
4)
Power
requirements and availability:
This
will influence the power source and fan motor size. A portable generator may be
required as a source of power.
5)
Cost,
efficiency, and maintenance:
This
may have an effect on the type of device that is selected and what is necessary
to keep it working properly.
6)
Shape of space:
This
will affect the type of directional device needed and the amount of air
pressure required to provide sufficient ventilation.
7)
Source of clean
air:
This is necessary to ensure adequate
ventilation.
8)
Length of time
ventilation is needed:
This is determined by the type of
contaminant and the work that is to be done in the space.
9)
Type of work to
be done:
This determines whether local
exhaust ventilation or general ventilation is required.
2. VENTILATION GUIDE
1)
Select fan with a capacity to quickly replace the air
in the space. Limitations are pasted on the fan housing.
2)
Use reliable, grounded electrical power.
3)
Eliminate any hazardous atmosphere. Exhaust toxic and
flammable air; supply fresh air when oxygen-deficient.
4)
Provide constant circulation of fresh air while space
is occupied.
·
Natural ventilation is allowable only on
"non-permit" entry.
·
Direct high-velocity supply ventilation to mix
the air throughout the space.
·
Capture contaminants during hot work or cleaning
with solvents by using additional local (or point) exhaust.
Pure oxygen is not
"fresh air". Never use bottled oxygen for ventilation.
5) Arrange
ductwork to ensure safety:
·
Locate supply fan intake away from flammable or
toxic air.
·
Position exhaust fan outlet to avoid
recirculation of bad air or endangering others outside the space.
·
Position exhaust duct inlet next to the source
of contaminants.
·
Keep ducts short and straight.
·
Make sure air circulates through entire space
and does not short-circuit.
6) Monitor
the air to ensure ventilation is keeping the air safe to breathe.
Appendix d.- Basic Confined Space Entry and Rescue
Equipment
Equipment shall include,
but not be limited to:
Safety Cones
Safety Vest
Barricades (as
required)
Men Working Signs (as
required)
Safety Flags
Manhole Hook (or pick)
Combustible Gas/Oxygen/CO2/Toxic
Gas Detector
Utility Ropes
Full Body Harness
Retrieval Line
Mechanical Retrieval
Device
Tri-pod or Other
Anchoring Point
Forced Air Ventilation
Blower & Hose
Fire Extinguisher
First Aid Kit
Safety Ladder
Manhole Access Bracket
Self Contained Air
Units
Hard Hats
Safety Glasses
Safety Shoes
Rescue Telephone Number
Appendix e.- Employee Duties
1. DUTIES OF AUTHORIZED ENTRANTS:
1)
Know the hazards that may be faced during entry.
2)
Recognize the signs and symptoms of hazard exposure.
3)
Understand the consequences of hazardous exposure.
4)
Use equipment properly.
5)
Communicate with the attendant.
6)
Alert the attendant of hazards.
7)
Exit the permit space quickly when required.
2. DUTIES OF THE ATTENDANT:
1)
Know entry hazards.
2)
Know behavioral effects of exposure.
3)
Maintain accurate entrant identification.
4)
Remain outside the permit space.
5)
Communicate with entrants.
6)
Monitor entry activities.
7)
Summon rescue and emergency services.
8)
Prevent unauthorized entry.
9)
Perform non-entry rescue.
10) Perform
no conflicting duties.
3. DUTIES OF THE “LEAD WORKER” (ENTRY
SUPERVISOR):
1) Know
the potential hazards during entry and work.
2) Determine
if acceptable entry conditions are present at a permit space where entry is
planned.
3) Terminate
entry as required by the standard.
4) Verify
that rescue services are readily available and the means for summoning them are
operable.
5) Remove
unauthorized individuals who enter or try to enter the permit space during
entry and work.
6) Determine
that entry and work operations remain consistent with entry permit terms and
that acceptable entry conditions are maintained.
Note:
The person authorizing the entry may also serve as the entrant or
attendant for the entry
Appendix f.- Confined Space Entry Procedures
1.
Determine if entry into confined space is necessary
to perform work.
2.
The following minimum required equipment should be
on hand:
1) Ventilation,
2) Barrier
and warning signs,
3) Gas
monitor capable of measuring concentrations of oxygen, flammable gases,
hydrogen sulfide and carbon monoxide.
3.
Eliminate any unsafe conditions before the access
door or cover is opened.
4.
Immediately guard the entry by some barrier and
signs to prevent people or objects from accidentally entering the confined
space.
5.
Conduct hazard assessment
1) Test the real or potential atmospheric
hazards
·
Oxygen content less than 19.5% or greater than
23.5%
·
Flammable gases and vapors greater than 10% of
the LEL (Lower Explosive Limit)
·
Hydrogen Sulfide concentrations greater than 10
ppm (Parts per million)
·
Carbon Monoxide concentrations greater than 35
ppm
·
Other toxic gases or vapors greater than PEL
(Permissible Exposure Limit)
Note: For more information, see Air Monitoring
Guide (Appendix B).
2)
Review the space for other observable serious safety
and health hazards:
·
mechanical,
·
electrical,
·
burn,
·
heat stress,
·
engulfment, or
·
entrapment hazards, etc.
6. If
any hazardous atmosphere exists, do the following:
1)
If possible, determine and eliminate the source of the
atmospheric hazards (for example: carbon monoxide from nearby truck or
gas-powered generator).
2)
When the atmosphere contains toxins or flammables,
ventilate the space by drawing air out until the air has been changed over
several times.
3)
When oxygen deficient, ventilate by pushing air into
the space until the air has been changed over several times.
4)
Verify the hazardous atmosphere has been eliminated by
testing the air.
Note: For more information, see Ventilation Guide
(Appendix C).
7. Determine
from information gathered above which of the following entry procedures is
appropriate:
1)
Non-Permit Space
If there are neither real nor
potential atmospheric hazards and no observable serious safety and health
hazards, this should be certified in writing.
2)
Alternative
Entry Procedures
If no observable serious safety and
health hazards exist and atmospheric hazards are controlled with continuous
ventilation, this should be certified in writing.
3)
Permit-Required
Space
If there are any observable serious
safety/health hazards in addition to potential or real atmospheric hazards, all
procedure here must be followed. Authorize permit with signature.
4)
Non-Respirable
Atmospheres
If hazardous atmosphere cannot be
eliminated by continuous ventilation, contact EHS before continuing.
8.
Follow pre-entry precautions:
1) Notify
affected departments of service interruption.
2) Lock-out/tag-out
all sources of energy (e.g. steam, electric, mechanical) posing a risk to
workers.
3) Install
blank in affected pipes where valves are not secure or seated.
4) Clean
and/or purge any chemical storage vessel.
5) Wear
appropriate personal protective and respiratory protection.
6) Have
lights and or ladder available.
7) If
coordination is needed with contractors, see Contractor Checklist.
8) Have
appropriate MSDS's (Material Safety Data Sheet).
9) Determine
how often air monitoring will be conducted.
9.
Additional precautions necessary for
Permit-Required Spaces:
1) Determine
start and end times for authorized entry.
2) Assign
roles and responsibilities as entrant(s), attendant(s), leadworker(s).
3) Set
up non-entry rescue equipment (tri-pod, harness).
4) Identify
rescue service.
5) Determine
communication method between entrant/attendant.
6) Conduct
pre-entry briefing: review hazards, procedures, and precautions.
10. Sign
and post the Permit/Certification at the site.
11. Continually
ventilate the space by pushing air so that a positive pressure changes the air
over several times every hour. Direct the clean air toward the worker.
12. Test
the air periodically while personnel are in the confined space to ensure the
ventilation is preventing any accumulation of a hazardous atmosphere.
13. Under
the following conditions, personnel must exit the confined space, re-evaluate
hazards, and modify entry procedures.
1) If
any hazardous atmosphere is detected after entry.
Note:
If a hazardous atmosphere has been detected after entry, EHS staff should
be notified before re-entry.
2) If
any health or safety hazard develops which was not anticipated.
3) If
Attendant (on Permit-Required Confined Space Entry) cannot effectively perform
duties.
4) If
personnel in confined space are experiencing symptoms from heat stress or
over-exposure to atmospheric hazards.
14. When
work is completed, return the space to original condition. Close out the permit/certification and submit
the completed paperwork to your supervisor.
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